/* Try connecting and sending a hello packet that has a bad version, which
* should fail with EPROTO. */
static void
test_send_invalid_version_hello(int argc OVS_UNUSED, char *argv[])
{
const char *type = argv[1];
struct ofpbuf *hello;
hello = ofpraw_alloc_xid(OFPRAW_OFPT_HELLO, OFP13_VERSION,
htonl(0x12345678), 0);
((struct ofp_header *) ofpbuf_data(hello))->version = 0;
test_send_hello(type, ofpbuf_data(hello), ofpbuf_size(hello), EPROTO);
ofpbuf_delete(hello);
}
/* Try connecting and sending an extra-long hello, which should succeed (since
* the specification says that implementations must accept and ignore extra
* data). */
static void
test_send_long_hello(struct ovs_cmdl_context *ctx)
{
const char *type = ctx->argv[1];
struct ofpbuf *hello;
enum { EXTRA_BYTES = 8 };
hello = ofpraw_alloc_xid(OFPRAW_OFPT_HELLO, OFP13_VERSION,
htonl(0x12345678), EXTRA_BYTES);
ofpbuf_put_zeros(hello, EXTRA_BYTES);
ofpmsg_update_length(hello);
test_send_hello(type, hello->data, hello->size, 0);
ofpbuf_delete(hello);
}
/* Try connecting and sending an extra-long hello, which should succeed (since
* the specification says that implementations must accept and ignore extra
* data). */
static void
test_send_long_hello(int argc OVS_UNUSED, char *argv[])
{
const char *type = argv[1];
struct ofpbuf *hello;
enum { EXTRA_BYTES = 8 };
hello = ofpraw_alloc_xid(OFPRAW_OFPT_HELLO, OFP13_VERSION,
htonl(0x12345678), EXTRA_BYTES);
ofpbuf_put_zeros(hello, EXTRA_BYTES);
ofpmsg_update_length(hello);
test_send_hello(type, ofpbuf_data(hello), ofpbuf_size(hello), 0);
ofpbuf_delete(hello);
}
struct ofpbuf *
ofputil_encode_bundle_add(enum ofp_version ofp_version,
struct ofputil_bundle_add_msg *msg)
{
struct ofpbuf *request;
struct ofp14_bundle_ctrl_msg *m;
/* Must use the same xid as the embedded message. */
request = ofpraw_alloc_xid(ofp_version == OFP13_VERSION
? OFPRAW_ONFT13_BUNDLE_ADD_MESSAGE
: OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
msg->msg->xid, ntohs(msg->msg->length));
m = ofpbuf_put_zeros(request, sizeof *m);
m->bundle_id = htonl(msg->bundle_id);
m->flags = htons(msg->flags);
ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
ofpmsg_update_length(request);
return request;
}
static struct ofpbuf *
ofperr_encode_msg__(enum ofperr error, enum ofp_version ofp_version,
ovs_be32 xid, const void *data, size_t data_len)
{
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
const struct ofperr_domain *domain;
const struct triplet *triplet;
struct ofp_error_msg *oem;
struct ofpbuf *buf;
/* Get the error domain for 'ofp_version', or fall back to OF1.0. */
domain = ofperr_domain_from_version(ofp_version);
if (!domain) {
VLOG_ERR_RL(&rl, "cannot encode error for unknown OpenFlow "
"version 0x%02x", ofp_version);
domain = &ofperr_of10;
}
/* Make sure 'error' is valid in 'domain', or use a fallback error. */
if (!ofperr_is_valid(error)) {
/* 'error' seems likely to be a system errno value. */
VLOG_ERR_RL(&rl, "invalid OpenFlow error code %d (%s)",
error, ovs_strerror(error));
error = OFPERR_NXBRC_UNENCODABLE_ERROR;
} else if (domain->errors[error - OFPERR_OFS].code < 0) {
VLOG_ERR_RL(&rl, "cannot encode %s for %s",
ofperr_get_name(error), domain->name);
error = OFPERR_NXBRC_UNENCODABLE_ERROR;
}
triplet = ofperr_get_triplet__(error, domain);
if (!triplet->vendor) {
buf = ofpraw_alloc_xid(OFPRAW_OFPT_ERROR, domain->version, xid,
sizeof *oem + data_len);
oem = ofpbuf_put_uninit(buf, sizeof *oem);
oem->type = htons(triplet->type);
oem->code = htons(triplet->code);
} else if (ofp_version <= OFP11_VERSION) {
struct nx_vendor_error *nve;
buf = ofpraw_alloc_xid(OFPRAW_OFPT_ERROR, domain->version, xid,
sizeof *oem + sizeof *nve + data_len);
oem = ofpbuf_put_uninit(buf, sizeof *oem);
oem->type = htons(NXET_VENDOR);
oem->code = htons(NXVC_VENDOR_ERROR);
nve = ofpbuf_put_uninit(buf, sizeof *nve);
nve->vendor = htonl(triplet->vendor);
nve->type = htons(triplet->type);
nve->code = htons(triplet->code);
} else {
ovs_be32 vendor = htonl(triplet->vendor);
buf = ofpraw_alloc_xid(OFPRAW_OFPT_ERROR, domain->version, xid,
sizeof *oem + sizeof(uint32_t) + data_len);
oem = ofpbuf_put_uninit(buf, sizeof *oem);
oem->type = htons(OFPET12_EXPERIMENTER);
oem->code = htons(triplet->type);
ofpbuf_put(buf, &vendor, sizeof vendor);
}
ofpbuf_put(buf, data, MIN(data_len, UINT16_MAX - buf->size));
ofpmsg_update_length(buf);
return buf;
}
/* Returns a buffer owned by the caller that encodes 'features' in the format
* required by 'protocol' with the given 'xid'. The caller should append port
* information to the buffer with subsequent calls to
* ofputil_put_switch_features_port(). */
struct ofpbuf *
ofputil_encode_switch_features(const struct ofputil_switch_features *features,
enum ofputil_protocol protocol, ovs_be32 xid)
{
struct ofp_switch_features *osf;
struct ofpbuf *b;
enum ofp_version version;
enum ofpraw raw;
version = ofputil_protocol_to_ofp_version(protocol);
switch (version) {
case OFP10_VERSION:
raw = OFPRAW_OFPT10_FEATURES_REPLY;
break;
case OFP11_VERSION:
case OFP12_VERSION:
raw = OFPRAW_OFPT11_FEATURES_REPLY;
break;
case OFP13_VERSION:
case OFP14_VERSION:
case OFP15_VERSION:
case OFP16_VERSION:
raw = OFPRAW_OFPT13_FEATURES_REPLY;
break;
default:
OVS_NOT_REACHED();
}
b = ofpraw_alloc_xid(raw, version, xid, 0);
osf = ofpbuf_put_zeros(b, sizeof *osf);
osf->datapath_id = htonll(features->datapath_id);
osf->n_buffers = htonl(features->n_buffers);
osf->n_tables = features->n_tables;
osf->capabilities = htonl(features->capabilities &
ofputil_capabilities_mask(version));
switch (version) {
case OFP10_VERSION:
if (features->capabilities & OFPUTIL_C_STP) {
osf->capabilities |= htonl(OFPC10_STP);
}
osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
OFP10_VERSION);
break;
case OFP13_VERSION:
case OFP14_VERSION:
case OFP15_VERSION:
case OFP16_VERSION:
osf->auxiliary_id = features->auxiliary_id;
/* fall through */
case OFP11_VERSION:
case OFP12_VERSION:
if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
osf->capabilities |= htonl(OFPC11_GROUP_STATS);
}
break;
default:
OVS_NOT_REACHED();
}
return b;
}
